Once approved by the OGC Membership, all OGC standards are
free and publicly available.

The OGC is an international consortium of more than 475
companies, government agencies, research organizations, and universities
participating in a consensus process to develop publicly available geospatial
standards. OGC Standards support interoperable solutions that
"geo-enable" the Web, wireless and location-based services, and
mainstream IT. OGC Standards empower technology developers to make geospatial
information and services accessible and useful with any application that needs
to be geospatially enabled. Visit the OGC website at http://www.opengeospatial.org/contact.